Dyfyniad APA

(2007). Collins Cobuild advanced dictionary of American English. Boston, MA: Thomson Heinle.

Dyfyniad Arddull Chicago

Collins Cobuild Advanced Dictionary of American English. Boston, MA: Thomson Heinle, 2007.

Dyfyniad MLA

Collins Cobuild Advanced Dictionary of American English. Boston, MA: Thomson Heinle, 2007.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.